A "warm and bubbly" 24-year-old whose shock cancer diagnosis led her to discover she was an identical twin has died just weeks after starting fundraising for life-saving treatment.

Caitlin Leggett was diagnosed with myeloid leukaemia in April 2025. She urgently needed a stem cell transplant and found out she and her sister Grace were actually identical twins rather than fraternal.

Following months of chemotherapy and the transplant in December 2025, Caitlin was in complete remission – but, in May 2026, doctors found the cancer had returned and she was told she had six months to live.

"Nobody expects this to happen," said her twin, Grace.

"You're not supposed to have one twin not be there."

Caitlin's family had previously decided to pursue potentially curative treatment abroad, and a GoFundMe was launched on 2 June, raising more than £100,000 towards her treatment by 10 June.

But, on Saturday June 13, Caitlin experienced a sudden, serious brain bleed, followed by a series of strokes, and her health rapidly declined.

She died two days later, with Grace, along with her brother Ethan, 27, sister Neve, 19, and her parents Jennifer, 54, and Ian, 57, surrounding her.

"It was really hard," Grace said.

"We all got the chance to speak to her. Neve put her favourite pillow spray on, we massaged her hands with lotion, and the nurses gave us a memory box with special paper and a charcoal wipe, so we could take her footprints and hand prints."